Battery string arranging device and typesetting stitch welding machine

Abstract

The invention provides a battery string tidying device and a typesetting stitch welding machine, the battery string tidying device comprises a tidying table, a light source, a camera, a light source cleaning mechanism and a PLC controller, the tidying table is used for bearing a battery string; the light source is used for irradiating ends of the battery string; the light source cleaning mechanism is arranged on the side of the light source; the camera is used for acquiring an image of the light source when the neatening table does not bear the battery string and the light source is turned on; the PLC determines whether the light source meets a predetermined cleaning condition based on the image of the light source, and sends a cleaning signal to the light source cleaning mechanism when the light source meets the predetermined cleaning condition, so that the light source cleaning mechanism cleans the light source; the camera is also used for acquiring an image of the battery string when the battery string is carried on the tidying table; the PLC obtains position information of the battery strings based on the images of the battery strings, and the arranging table arranges the battery strings based on the position information of the battery strings. The light source foreign matter can be effectively cleaned in time, equipment does not need to be shut down in the cleaning process, and therefore the operation efficiency of the equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic module production, and specifically to a battery string regularization device and a layout stacking welding machine. Background Art

[0002] Before using the typesetting stitch welding machine to weld the busbars to the battery string, the battery string regularization device needs to be used to regularize the battery string. The regularization process is roughly as follows: first place the battery string on the regularization table, take a picture of the battery string with a camera to locate the battery string, and then the regularization table regularizes the battery string according to the position information of the battery string. The regularized battery string is finally moved to the welding station by the stitch welding pickup device for busbar welding.

[0003] After frequently placing battery strings on the aligning table, the de-crystallized cells that fall off the battery cells are easily attached to the fill light source used to take photos with the camera, causing noise on the image captured by the camera, and ultimately making it impossible to accurately locate the battery string. Therefore, it is necessary to clean the debris on the surface of the light source regularly or when the debris attached to the light source affects normal positioning.

[0004] The current method of cleaning light sources is manual cleaning. However, since the decrystalline particles are very small, they are difficult to detect with the naked eye, which increases the difficulty of manual cleaning. In addition, in order to ensure safety, the equipment generally needs to be shut down during the manual cleaning process. Shutting down the equipment for cleaning reduces the operating efficiency of the equipment. Summary of the invention

[0005] In view of the above technical problems existing in the existing battery string regularization device, the present application provides a battery string regularization device, and its detailed technical solution is as follows:

[0006] A battery string tidying device includes a tidying table, a light source, a camera, a light source cleaning mechanism and a PLC controller, wherein:

[0007] The regularization table is used to carry the battery string, and the end of the battery string extends outward from the regularization table;

[0008] A light source is disposed below at least one end of the tidying table to illuminate the end of the battery string;

[0009] The light source cleaning mechanism is arranged on the side of the light source;

[0010] The camera is arranged above the light source, and is used to obtain an image of the light source when no battery string is carried on the tidying table and the light source is turned on;

[0011] The PLC controller is used to receive and analyze the image of the light source acquired by the camera, determine whether the light source meets the predetermined cleaning condition based on the grayscale change of the image of the light source, and send a cleaning signal to the light source cleaning mechanism corresponding to the light source when the light source meets the predetermined cleaning condition, so that the light source cleaning mechanism cleans the light source;

[0012] The camera is also used to obtain images of the battery string when it is carried on the aligning table and the light source is turned on;

[0013] The PLC controller is used to receive and analyze the image of the battery string obtained by the camera to obtain the position information of the battery string, and send the position information of the battery string to the aligning station. The aligning station aligns the battery string based on the position information of the battery string.

[0014] The battery string tidying device provided by the present application has a light source cleaning mechanism disposed on the side of the light source. The light source is turned on and the image of the light source is obtained before the battery string is placed on the tidying table. The grayscale change of the light source image determines whether the cleaning conditions are met, and when the cleaning conditions are met, the light source cleaning mechanism is controlled to automatically clean the light source, thereby ensuring that the surface of the light source is always kept clean and that the location information of the battery string can be accurately obtained after the battery string is placed on the tidying table. Compared with the existing manual cleaning method, it is possible to clean foreign matter from the light source in a timely and effective manner, and there is no need to shut down the equipment during the cleaning process, thereby improving the operating efficiency of the equipment.

[0015] In some embodiments, the PLC controller is also used to determine whether there is an abnormality in the extended welding ribbon at the end of the battery string by analyzing the image of the battery string, and the abnormality includes at least one of the following: bending, missing, and abnormal length.

[0016] The system realizes the abnormal detection of the long welding strips at the ends of the battery strings. On this basis, the NG battery strings with abnormally long welding strips can be removed to prevent the NG battery strings from being welded into the photovoltaic modules.

[0017] In some embodiments, the light source cleaning mechanism is an air blowing mechanism, which is used to blow air onto the surface of the light source to blow away debris on the surface of the light source; or, the light source cleaning mechanism is an air suction mechanism, which is used to suction air onto the surface of the light source to remove debris on the surface of the light source; or, the light source cleaning mechanism is a wiping structure, which is used to wipe the surface of the light source to remove debris on the surface of the light source.

[0018] Several preferred implementations of light source cleaning mechanisms are provided, all of which can clean debris from the surface of the light source. The air blowing mechanism and the air exhaust mechanism implement the cleaning in a non-contact manner, which can reduce the wear on the surface of the light source.

[0019] In some embodiments, the straightening table includes a first straightening table and a second straightening table arranged in parallel along a first horizontal direction, and a gap is maintained between the second end of the first straightening table and the first end of the second straightening table; the first straightening table and the second straightening table are respectively used to carry a first battery string and a second battery string extending along the first horizontal direction, wherein the positive and negative polarities of the first battery string and the second battery string are opposite, both ends of the first battery string extend out of the first straightening table, and both ends of the second battery string extend out of the second straightening table, the first straightening table is also used to implement the straightening of the first battery string, and the second straightening table is also used to implement the straightening of the second battery string.

[0020] Photovoltaic modules can generally be divided into full-cell modules and half-cell modules. Full-cell modules are made of a battery string array composed of multiple full-cell battery strings that are packaged, and half-cell modules are made of a battery string array composed of multiple half-cell battery strings that are packaged. A half-cell battery string is made by welding small pieces of a whole cell after breaking off the whole cell, and a half-cell battery string is about half the length of a whole cell string. Compared with full-cell modules, half-cell modules exhibit better photoelectric conversion efficiency, and therefore have received much attention and favor in recent years. The battery string array in a half-cell module is arranged by a plurality of module units, and each module unit includes two battery strings arranged in parallel and with opposite polarities. By setting the regularization station to include a first regularization station and a second regularization station arranged in parallel along a first horizontal direction, the regularization station can perform synchronous regularization of two battery strings in one module unit each time.

[0021] In some embodiments, the light source includes a first light source, a second light source, and a third light source, and the camera includes a first camera, a second camera, and a third camera, wherein:

[0022] The first light source is located below the first end of the first tidying platform, and is used to illuminate the first end of the first battery string extending out of the first tidying platform;

[0023] The second light source is located below the gap between the first tidying platform and the second tidying platform, and is used to illuminate the second end of the first battery string extending out of the first tidying platform and the first end of the second battery string extending out of the second tidying platform;

[0024] The third light source is located below the second end of the second tidying platform, and is used to illuminate the second end of the second battery string extending out of the second tidying platform;

[0025] The first camera is arranged above the first light source, and is used to obtain an image of the first light source when the first tidying table does not carry a battery string and the first light source is turned on; the PLC controller is used to receive and analyze the image of the first light source, and control the light source cleaning mechanism to clean the first light source when the first light source meets a predetermined cleaning condition;

[0026] The second camera is arranged above the second light source, and is used to obtain an image of the second light source when neither the first tidying table nor the second tidying table carries a battery string and the second light source is turned on; the PLC controller is used to receive and analyze the image of the second light source, and control the light source cleaning mechanism to clean the second light source when the second light source meets a predetermined cleaning condition;

[0027] The third camera is arranged above the third light source, and is used for acquiring an image of the third light source when no battery string is carried on the second tidying table and the third light source is turned on; the PLC controller is used for receiving and analyzing the image of the third light source, and controlling the light source cleaning mechanism to clean the third light source when the third light source meets predetermined cleaning conditions.

[0028] By setting the light source to include the first light source, the second light source and the third light source, and setting the camera to include the first camera, the second camera and the third camera, the battery string regularization device of the present application can simultaneously implement the precise positioning of the first battery string and the second battery string carried on the first regularization platform and the second regularization platform. When the battery string is not carried on the first regularization platform and the second regularization platform, the first camera, the second camera and the third camera can respectively obtain the images of the first light source, the second light source and the third light source, thereby accurately detecting the cleanliness of the first light source, the second light source and the third light source, and ensuring that the light source cleaning mechanism can clean the first light source, the second light source and the third light source in a timely manner.

[0029] In some embodiments, the first camera is also used to obtain a first end image of the first battery string when the first battery string is loaded on the first organizing table and the first light source is turned on; the second camera is also used to obtain a second end image of the first battery string and a first end image of the second battery string when the first battery string is loaded on the first organizing table and the second battery string is loaded on the second organizing table and the second light source is turned on; the third camera is also used to obtain a second end image of the second battery string when the second battery string is loaded on the second organizing table and the third light source is turned on; the PLC controller is used to receive and analyze the first end image of the first battery string and / or the second end image of the first battery string to obtain position information of the first battery string, and send the position information of the first battery string to the first organizing table, and the first organizing table organizes the first battery string based on the position information of the first battery string; the PLC controller is also used to receive and analyze the first end image of the second battery string and / or the second end image of the second battery string to obtain position information of the second battery string, and send the position information of the second battery string to the second organizing table, and the second organizing table organizes the second battery string based on the position information of the second battery string.

[0030] The first camera, the second camera and the third camera can respectively obtain images of the corresponding ends of the illuminated first battery string and / or the second battery string, so that the PLC controller can achieve accurate positioning of the first battery string and the second battery string, and ultimately ensure that the first regularization station and the second regularization station complete the regularization of the first battery string and the second battery string.

[0031] In some embodiments, the first light source and the third light source are configured to be independently translatable along a first horizontal direction to implement position adjustment.

[0032] By adjusting the positions of the first light source and the third light source, it is ensured that the first light source can illuminate the first end of the first battery string extending out of the first regularization platform, and the third light source can illuminate the second end of the second battery string extending out of the second regularization platform, so as to implement compatibility with the first battery string and the second battery string having different lengths.

[0033] In some embodiments, the light source cleaning mechanism includes a first light source cleaning mechanism, a second light source cleaning mechanism and a third light source cleaning mechanism, wherein: the first light source cleaning mechanism is arranged on the side of the first light source, and the first light source cleaning mechanism is used to clean the first light source; the second light source cleaning mechanism is arranged on the side of the second light source, and the second light source cleaning mechanism is used to clean the second light source; the third light source cleaning mechanism is arranged on the side of the third light source, and the second light source cleaning mechanism is used to clean the third light source.

[0034] By including the first light source cleaning mechanism, the second light source cleaning mechanism and the third light source cleaning mechanism, the light source cleaning mechanism can perform targeted cleaning on the first light source, the second light source and the third light source, thereby improving cleaning efficiency and cleaning flexibility.

[0035] The present application also provides a layout and stack welding machine, which is used to layout and weld busbars of battery strings according to the battery string array in the photovoltaic module. The layout and stack welding machine includes any of the battery string regularization devices, regularization table driving mechanisms, layout feeding devices, stack welding picking devices and stack welding devices described above, wherein:

[0036] The regularization table of the battery string regularization device is installed at the driving end of the regularization table driving mechanism, and the regularization table driving mechanism is used to drive the regularization table to move between the material receiving station and the string picking station. The light source, camera and light source cleaning mechanism are all arranged at the material receiving station;

[0037] The typesetting and feeding device is arranged in front of the battery string regularization device, and is used to place the battery string on the regularization table located at the material receiving station according to the typesetting positive and negative pole requirements;

[0038] The regularization table is used to arrange the battery strings of the typesetting and feeding device;

[0039] The stack welding picking device includes a picking string assembly arranged one by one corresponding to each battery string in the battery string array; the regularization table driving mechanism is used to transport the regularized battery string to the picking string station according to the layout position requirements, and the stack welding picking device moves to drive the picking string assembly corresponding to the battery string at the picking string station to move to the picking string station to pick up the battery string;

[0040] The stitch welding pick-up device moves to drive the pick-up string assembly with the battery string picked up to the welding station, and the stitch welding device welds the bus bar to the long welding strip at the end of the battery string located at the welding station;

[0041] The stack welding picking device is also used to move and lay the battery strings picked up by each picking string assembly on the glass plate after the busbar welding of the battery strings picked up by each picking string assembly is completed.

[0042] The layout and stitch welding machine provided by the present invention comprises a layout loading device which first places the battery strings on the battery string regularizing device according to the layout positive and negative pole requirements, the battery string regularizing device then regularizes the battery strings according to the layout position requirements and transports the regularized battery strings to a string picking station, a stitch welding picking device picks up the battery strings from the string picking station and transports the battery strings to a welding station, the stitch welding device directly welds the bus bars to the battery strings on the stitch welding picking device, and after all the bus bars are welded, the stitch welding picking device then places all the battery strings on a glass plate, thereby completing the layout and bus bar welding of a battery string array.

[0043] In some embodiments, the typesetting and stacking welding machine also includes an NG material box, and the PLC controller is used to control the typesetting loading device to pick up the battery string on the regular table at the material receiving station and place the battery string into the NG material box when the extended welding ribbon at the end of the battery string has at least one of bending, missing and length abnormalities.

[0044] It realizes the automatic removal of NG battery strings with abnormally long solder strips and the placement of the removed NG battery strings into NG material boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of a battery string regularization device in an embodiment of the present application;

[0046] Figure 2 It is a partial structural schematic diagram of a typesetting stack welding machine in an embodiment of the present application;

[0047] Figure 3 A control logic block diagram of each component of the battery string regularization device in an embodiment of the present application;

[0048] Figure 4 The image of the light source that does not meet the cleaning conditions is obtained by the camera when there is no battery string on the regularization table;

[0049] Figure 5 It is an image of a light source that meets the cleaning conditions and is obtained by the camera when there is no battery string on the regularization table;

[0050] Figure 6 A schematic diagram of a battery string array of a half-cell module;

[0051] Figures 1 to 6 Included:

[0052] Battery string regularization device 10:

[0053] Structuring station 1: first strutting station 11, second strutting station 12;

[0054] Light source 2: a first light source 21, a second light source 22, and a third light source 23;

[0055] Camera 3: first camera 31, second camera 32, third camera 33;

[0056] Light source cleaning mechanism 4: first light source cleaning mechanism 41, second light source cleaning mechanism 42, third

[0057] Light source cleaning mechanism 43;

[0058] PLC controller 5;

[0059] Regularization table drive mechanism 20;

[0060] Typesetting and feeding device 60:

[0061] First layout feeding mechanism 61;

[0062] Second layout feeding mechanism 62;

[0063] Stitch welding pick-up device 70;

[0064] Pick up string assembly 71;

[0065] NG material box 80;

[0066] Stitch welding device 90;

[0067] Battery string array 100, component unit 101, battery string 102;

[0068] Material receiving station M, string picking station N, welding station K. DETAILED DESCRIPTION

[0069] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0070] The battery string regularization device of the present application is used to regularize the battery string so that the position of the battery string meets the layout requirements.

[0071] like Figure 1 and Figure 3 As shown, the battery string regularization device 10 in the embodiment of the present application includes a regularization platform 1, a light source 2, a camera 3, a light source cleaning mechanism 4 and a PLC controller 5, wherein:

[0072] The tidying platform 1 is used to carry the battery string, and the ends of the battery string extend outward from the tidying platform 1.

[0073] The light source 2 is disposed below at least one end of the aligning table 1 to illuminate the end of the battery string.

[0074] The light source cleaning mechanism 4 is arranged on the side of the light source 2 .

[0075] The camera 3 is disposed above the light source 2 , and is used to obtain an image of the light source 2 when no battery string is carried on the tidying table 1 and the light source 2 is turned on.

[0076] The working process of the battery string regularization device 10 in the embodiment of the present application is as follows:

[0077] Before placing the battery string on the tidying table 1, the light source 2 is first subjected to a cleanliness test to determine whether the light source 2 meets the predetermined cleaning conditions. Specifically:

[0078] The light source 2 is turned on, the camera 3 acquires an image of the light source 2 , and transmits the image of the light source 2 to the PLC controller 5 .

[0079] After receiving the image of the light source 2, the PLC controller 5 determines whether the light source 2 meets the predetermined cleaning condition based on the grayscale change of the image of the light source.

[0080] like Figure 4 The image of the light source 2 shown includes a high-brightness light source area C and a low-brightness regular platform area D, wherein there are no obvious low-brightness dark spots in the light source area C, indicating that there is no debris such as falling crystals on the surface of the light source 2.

[0081] like Figure 5 In the image of the light source shown, there are several obvious low-brightness dark spots E in the light source area C. These low-brightness dark spots E are images of decrystallization and other debris that have fallen from the battery cell, indicating that decrystallization and other debris have fallen from the surface of the light source 2.

[0082] The PLC controller 5 can determine whether the light source 2 meets the predetermined cleaning condition by performing grayscale change analysis on the image of the light source. The predetermined cleaning condition can be set according to specific circumstances. For example, when the number of low-brightness dark spots E in the light source area C is greater than a predetermined first threshold, it is determined that the light source 2 meets the predetermined cleaning condition. For another example, when the percentage of the total area of ​​the low-brightness dark spots E in the light source area C to the area of ​​the light source area C is greater than a predetermined second threshold, it is determined that the light source 2 meets the predetermined cleaning condition.

[0083] When the light source 2 meets the predetermined cleaning condition, the PLC controller 5 sends a cleaning signal to the light source cleaning mechanism 4 corresponding to the light source 2 , so that the light source cleaning mechanism 4 cleans the light source 2 .

[0084] At this point, the cleanliness inspection and cleaning of the light source 2 are completed.

[0085] Next, the battery string is regulated, specifically:

[0086] Place the battery string on the aligning table 1.

[0087] The light source 2 is turned on, and the camera 3 obtains the image of the battery string carried on the aligning table 1 and transmits the image of the battery string to the PLC controller 5 .

[0088] The PLC controller 5 receives the image of the battery string, obtains the position information of the battery string based on the image of the battery string, and sends the position information of the battery string to the aligning station 1 .

[0089] The aligning station 1 aligns the battery string based on the position information of the battery string so that the position of the battery string meets the layout and lap welding requirements of the subsequent process.

[0090] It can be seen that the battery string regularization device provided by the present application has a light source cleaning mechanism on the side of the light source. Before placing the battery string on the regularization table, the light source is turned on and the image of the light source is obtained. The grayscale change of the light source image determines whether the cleaning conditions are met, and when the cleaning conditions are met, the light source cleaning mechanism is controlled to automatically clean the light source, thereby ensuring that the surface of the light source is always kept clean and that the location information of the battery string can be accurately obtained after the battery string is placed on the regularization table. Compared with the existing manual cleaning method, it can timely and effectively clean foreign matter from the light source, and there is no need to shut down the equipment during the cleaning process, thereby improving the operating efficiency of the equipment.

[0091] Optionally, after receiving the image of the battery string, the PLC controller is also used to determine whether there is an abnormality in the extended welding strip at the end of the battery string by analyzing the image of the battery string, and the abnormality includes at least one of the following: bending, missing, and abnormal length. In this way, NG battery strings with abnormal extended welding strips can be removed in time to prevent NG battery strings from being welded into photovoltaic modules.

[0092] The light source cleaning mechanism 4 in the embodiment of the present application may adopt an air blowing mechanism, which is used to blow air to the surface of the light source 2 to blow away debris on the surface of the light source.

[0093] The light source cleaning mechanism 4 may also be an exhaust mechanism, which is used to exhaust air from the surface of the light source to remove debris on the surface of the light source.

[0094] Both the blowing and the exhausting methods are non-contact cleaning methods, which can reduce the wear on the surface of the light source 2. The exhausting cleaning method can also avoid contaminating the machine.

[0095] Of course, the light source cleaning mechanism 4 may also adopt a wiping component, and the wiping component cleans the surface of the light source 2 by wiping the surface of the light source 2 .

[0096] As known to those skilled in the art, photovoltaic modules can generally be divided into whole-cell modules and half-cell modules. Whole-cell modules are made by packaging an array of battery strings consisting of multiple whole-cell battery strings, and half-cell modules are made by packaging an array of battery strings consisting of multiple half-cell battery strings. A half-cell battery string is made by welding small pieces broken from whole-cell battery cells, and a half-cell battery string is approximately half the length of a full-cell battery string.

[0097] Compared with the whole-cell module, the half-cell module has a better photoelectric conversion efficiency, so it has attracted much attention and favor in recent years. Figure 6 As shown, the battery string array 100 in the half-cell module is composed of a plurality of module units 101 arranged in an arrangement, and each module unit 101 includes two battery strings 102 arranged in parallel and having opposite polarities.

[0098] In order to implement the synchronization and regulation of two battery strings 102 in a component unit 101, it is optional, such as Figure 1 As shown, the tidying table 1 in the embodiment of the present application includes a first tidying table 11 and a second tidying table 12 arranged side by side along a first horizontal direction (i.e., the X direction in the figure), and a gap is maintained between the second end of the first tidying table 11 and the first end of the second tidying table 12.

[0099] The first tidying table 11 and the second tidying table 12 are respectively used to carry a first battery string and a second battery string extending along a first horizontal direction, wherein the positive and negative polarities of the first battery string and the second battery string are opposite, wherein both ends of the first battery string extend out of the first tidying table 11, and both ends of the second battery string extend out of the second tidying table 12, the first tidying table 11 is also used to implement tidying of the first battery string, and the second tidying table 12 is also used to implement tidying of the second battery string.

[0100] By configuring the arranging station 1 to include a first arranging station 11 and a second arranging station 12 arranged in parallel along a first horizontal direction, the arranging station 1 can perform synchronous arranging of two battery strings (i.e., a first battery string and a second battery string) in one component unit each time.

[0101] Continue to refer Figure 1 As shown, optionally, the light source 2 includes a first light source 21, a second light source 22 and a third light source 23, and correspondingly, the camera 3 includes a first camera 31, a second camera 32 and a third camera 33, wherein:

[0102] The first light source 21 is located below the first end of the first aligning platform 11 and is used to illuminate the first end of the first battery string extending out of the first aligning platform.

[0103] The second light source 22 is located below the gap between the first tidying station 11 and the second tidying station 12 , and is used to illuminate the second end of the first battery string extending out of the first tidying station 11 and the first end of the second battery string extending out of the second tidying station 12 .

[0104] The third light source 23 is located below the second end of the second aligning platform 12 , and is used to illuminate the second end of the second battery string extending out of the second aligning platform 12 .

[0105] The first camera 31 is disposed above the first light source 21, and is used to obtain an image of the first light source 21 when no battery string is carried on the first tidying table 11 and the first light source 21 is turned on. The PLC controller 5 is used to receive and analyze the image of the first light source 21, and control the light source cleaning mechanism 4 to clean the first light source 21 when the first light source 21 meets a predetermined cleaning condition.

[0106] The second camera 32 is disposed above the second light source 22, and is used to obtain an image of the second light source 22 when no battery string is carried on the first tidying table 11 and the second tidying table 12 and the second light source 22 is turned on. The PLC controller 5 is used to receive and analyze the image of the second light source 22, and control the light source cleaning mechanism 4 to clean the second light source 22 when the second light source 22 meets the predetermined cleaning conditions.

[0107] The third camera 33 is arranged above the third light source 23, and is used to obtain an image of the third light source 23 when no battery string is carried on the second tidying table 12 and the third light source 23 is turned on. The PLC controller 5 is used to receive and analyze the image of the third light source 23, and control the light source cleaning mechanism 4 to clean the third light source when the third light source 23 meets the predetermined cleaning conditions.

[0108] It can be seen that by setting the light source to include the first light source 21, the second light source 22 and the third light source 23, and correspondingly setting the camera to include the first camera 31, the second camera 32 and the third camera 33, the battery string regularization device of the present application can simultaneously implement the precise positioning of the first battery string and the second battery string carried on the first regularization platform 11 and the second regularization platform 12, so that the first regularization platform 11 and the second regularization platform 12 can synchronously complete the synchronous regularization of the two battery strings constituting a component unit.

[0109] In addition, when the first tidying table 11 and the second tidying table 12 are not loaded with battery strings, the first camera 31, the second camera 32 and the third camera 33 can obtain images of the first light source 21, the second light source 22 and the third light source 23 respectively, so as to accurately detect the cleanliness of the first light source 21, the second light source 22 and the third light source 23, and ensure that the light source cleaning mechanism 4 can clean the first light source 21, the second light source 22 and the third light source 23 in time.

[0110] Optionally, the first camera 31 is used to obtain a first end image of the first battery string when the first battery string is carried on the first tidying table 11 and the first light source 21 is turned on. The second camera 32 is used to obtain a second end image of the first battery string and a first end image of the second battery string when the first battery string is carried on the first tidying table 11 and the second battery string is carried on the second tidying table 12 and the second light source 22 is turned on. The third camera 33 is used to obtain a second end image of the second battery string when the second battery string is carried on the second tidying table 12 and the third light source 23 is turned on.

[0111] The PLC controller 5 is used to receive and analyze the first end image of the first battery string and / or the second end image of the first battery string to obtain the position information of the first battery string, and send the position information of the first battery string to the first regularization station 11. The first regularization station 11 regularizes the first battery string based on the position information of the first battery string.

[0112] The PLC controller 5 is also used to receive and analyze the first end image of the second battery string and / or the second end image of the second battery string to obtain position information of the second battery string, and send the position information of the second battery string to the second tidying station 12, and the second tidying station 12 tidyes the second battery string based on the position information of the second battery string.

[0113] Optionally, the first light source 21 and the third light source 23 are configured to be independently translatable along the first horizontal direction to implement position adjustment, thereby ensuring that the first light source 21 can illuminate the first end of the first battery string extending out of the first tidying up platform 11, and the third light source 23 can illuminate the second end of the second battery string extending out of the second tidying up platform 12, so that the battery string tidying device in the embodiment of the present application can achieve compatibility with the first battery string and the second battery string having different lengths.

[0114] Continue to refer Figure 1 As shown, the light source cleaning mechanism 4 in the embodiment of the present application includes a first light source cleaning mechanism 41, a second light source cleaning mechanism 44 and a third light source cleaning mechanism 43, wherein: the first light source cleaning mechanism 41 is arranged on the side of the first light source 21, and the first light source cleaning mechanism 41 is used to clean the first light source 21. The second light source cleaning mechanism 42 is arranged on the side of the second light source 22, and the second light source cleaning mechanism 42 is used to clean the second light source 22. The third light source cleaning mechanism 43 is arranged on the side of the third light source 23, and the third light source cleaning mechanism 43 is used to clean the third light source 23.

[0115] By making the light source cleaning mechanism 4 include a first light source cleaning mechanism 41, a second light source cleaning mechanism 42 and a third light source cleaning mechanism 43, the light source cleaning mechanism 4 can clean the first light source 21, the second light source 22 and the third light source 23 quickly and nearby, and can clean the first light source 21, the second light source 22 and the third light source 23 simultaneously, thereby improving the cleaning efficiency.

[0116] The present application also provides a layout and stack welding machine, which is used to layout and weld busbars of battery strings according to the battery string array in the photovoltaic module, such as Figure 1 to Figure 2 As shown, the typesetting stitch welding machine in the embodiment of the present application includes a battery string regularization device 10, a regularization table driving mechanism 20, a typesetting feeding device 60, a stitch welding picking device 70 and a stitch welding device 90 of any of the above embodiments, wherein:

[0117] The regularization table 1 of the battery string regularization device 10 is installed at the driving end of the regularization table driving mechanism 20, and the regularization table driving mechanism 20 is used to drive the regularization table 1 to move between the material receiving station M and the string picking station N. The light source 2, the camera 3 and the light source cleaning mechanism 4 are all arranged at the material receiving station M. Optionally, the moving direction of the regularization table 1 is a second horizontal direction perpendicular to the first horizontal direction (i.e. Figure 1 Y direction in ).

[0118] The typesetting and loading device 60 is arranged in the front of the battery string regularization device 10, and the typesetting and loading device 60 is used to place the battery string on the regularization table 1 located at the material receiving station M according to the typesetting positive and negative pole requirements.

[0119] The aligning station 1 is used to align the battery strings placed on the layout feeding device 60 .

[0120] The stitch welding picking device 70 includes a picking assembly 71 arranged one by one corresponding to each battery string in the battery string array. The aligning table driving mechanism 20 is used to transport the aligned battery strings to the picking station N according to the layout position requirements, and the stitch welding picking device 70 moves to drive the picking assembly 71 corresponding to the battery string at the picking station N to move to the picking station N to pick up the battery string.

[0121] The stitch welding pick-up device 70 moves to drive the pick-up string assembly with the battery string picked up to the welding station K, and the stitch welding device 90 welds the bus bar to the extended welding strip at the end of the battery string located at the welding station K.

[0122] The stack welding picking device 70 is also used to move and lay the battery strings picked up by each string picking assembly 71 on the glass plate after the busbar welding of the battery strings picked up by each string picking assembly 71 is completed.

[0123] It can be seen that the layout and stitch welding machine provided by the present invention has a layout loading device 60 that first places the battery string on the organizing table 1 of the battery string organizing device 10 according to the layout positive and negative pole requirements, and the battery string organizing device 10 then organizes the battery string according to the layout position requirements and transports the organized battery string to the string picking station N, the stitch welding picking device 70 picks up the battery string from the string picking station and transports the battery string to the welding station K, the stitch welding device 90 directly welds the bus bar to the battery string on the stitch welding picking device 70, and after all the bus bars are welded, the stitch welding picking device 70 lays all the battery strings on the glass plate, thereby completing the layout and bus bar welding of a battery string array.

[0124] The battery string is only picked up and placed twice during the entire layout and stack welding process, which greatly reduces the number of times the battery string is picked up and placed, and can effectively reduce the fragmentation rate of the battery cells during the layout and stack welding process.

[0125] Continuing with reference to 1, when the arranging station 1 includes a first arranging station 11 and a second arranging station 12, correspondingly, the layout loading device 60 includes a first layout loading mechanism 61 close to the first arranging station 11, and a second layout loading mechanism 62 close to the second arranging station 12. Among them, the first layout loading mechanism 61 is used to load the first battery string onto the first arranging station 11, and the second layout loading mechanism 62 is used to load the second battery string onto the second arranging station 12.

[0126] Optionally, the typesetting and stacking welding machine in the embodiment of the present application also includes an NG material box 80. The PLC controller 5 is used to control the typesetting loading device 60 to pick up the NG battery string with abnormally long solder strips on the straightening table 1 located at the material receiving station M when the long solder strips at the ends of the battery string are bent, missing, or have at least one of abnormal lengths, and place the battery string into the NG material box 80.

[0127] Correspondingly, when the tidying station 1 includes the first tidying station 11 and the second tidying station 12, two NG material boxes 80 are provided, wherein one NG material box 80 is close to the first tidying station 11, and is used to receive the NG battery string rejected from the first tidying station 11 by the typesetting and feeding device 60. The other NG material box 80 is close to the second tidying station 12, and is used to receive the NG battery string rejected from the second tidying station 12 by the typesetting and feeding device 60.

[0128] The present application is described in sufficient detail above with certain particularity. It should be understood by those skilled in the art that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, rather than by the above description in the embodiments.

Claims

1. A battery string regularization device, characterized in that: The battery string regularization device includes a regularization platform, a light source, a camera, a light source cleaning mechanism and a PLC controller, wherein: The tidying platform is used to carry the battery string, and the end of the battery string extends outward from the tidying platform; The light source is arranged below at least one end of the tidying table, and is used to illuminate the end of the battery string; The light source cleaning mechanism is arranged on the side of the light source; The camera is arranged above the light source, and the camera is used to obtain an image of the light source when no battery string is carried on the tidying table and the light source is turned on; The PLC controller is used to receive and analyze the image of the light source acquired by the camera, determine whether the light source meets a predetermined cleaning condition based on the grayscale change of the image of the light source, and send a cleaning signal to a light source cleaning mechanism corresponding to the light source when the light source meets the predetermined cleaning condition, so that the light source cleaning mechanism cleans the light source; The camera is also used to obtain an image of the battery string when the battery string is carried on the tidying table and the light source is turned on; The PLC controller is used to receive and analyze the image of the battery string acquired by the camera to obtain the position information of the battery string, and send the position information of the battery string to the tidying station, and the tidying station tidyes the battery string based on the position information of the battery string.

2. The battery string regularization device according to claim 1, characterized in that: The PLC controller is also used to determine whether there is an abnormality in the extended welding strip at the end of the battery string by analyzing the image of the battery string, and the abnormality includes at least one of the following: bending, missing, and abnormal length.

3. The battery string regularization device according to claim 1, characterized in that: The light source cleaning mechanism is an air blowing mechanism, and the air blowing mechanism is used to blow air to the surface of the light source to blow away the debris on the surface of the light source; or, The light source cleaning mechanism is an air extraction mechanism, and the air extraction mechanism is used to extract air from the surface of the light source to remove debris on the surface of the light source; or, The light source cleaning mechanism is a wiping structure, and the light source cleaning mechanism is used to wipe the surface of the light source to remove debris on the surface of the light source.

4. The battery string regularization device according to claim 1, characterized in that: The tidying table comprises a first tidying table and a second tidying table arranged in parallel along a first horizontal direction, and a gap is maintained between the second end of the first tidying table and the first end of the second tidying table; The first regularization table and the second regularization table are respectively used to carry a first battery string and a second battery string extending along the first horizontal direction, wherein the positive and negative polarities of the first battery string and the second battery string are opposite, two ends of the first battery string extend out of the first regularization table, and two ends of the second battery string extend out of the second regularization table, the first regularization table is also used to implement regularization of the first battery string, and the second regularization table is also used to implement regularization of the second battery string.

5. The battery string regularization device according to claim 4, characterized in that: The light source includes a first light source, a second light source and a third light source, and the camera includes a first camera, a second camera and a third camera, wherein: The first light source is located below the first end of the first tidying platform, and is used to illuminate the first end of the first battery string extending out of the first tidying platform; The second light source is located below the gap between the first and second regularization platforms, and is used to illuminate the second end of the first battery string extending out of the first regularization platform and the first end of the second battery string extending out of the second regularization platform; The third light source is located below the second end of the second tidying platform, and is used to illuminate the second end of the second battery string extending out of the second tidying platform; The first camera is arranged above the first light source, and is used to obtain an image of the first light source when no battery string is carried on the first tidying table and the first light source is turned on; the PLC controller is used to receive and analyze the image of the first light source, and control the light source cleaning mechanism to clean the first light source when the first light source meets a predetermined cleaning condition; The second camera is arranged above the second light source, and is used to obtain an image of the second light source when neither the first tidying table nor the second tidying table carries a battery string and the second light source is turned on; the PLC controller is used to receive and analyze the image of the second light source, and control the light source cleaning mechanism to clean the second light source when the second light source meets a predetermined cleaning condition; The third camera is arranged above the third light source, and is used for acquiring an image of the third light source when no battery string is carried on the second tidying table and the third light source is turned on; the PLC controller is used for receiving and analyzing the image of the third light source, and controlling the light source cleaning mechanism to clean the third light source when the third light source meets predetermined cleaning conditions.

6. The battery string tidying device according to claim 5, characterized in that: The first camera is further used to obtain a first end image of the first battery string when the first battery string is carried on the first tidying table and the first light source is turned on; The second camera is further used to obtain a second end image of the first battery string and a first end image of the second battery string when the first battery string is carried on the first tidying table, the second battery string is carried on the second tidying table, and the second light source is turned on; The third camera is also used to obtain a second end image of the second battery string when the second battery string is carried on the second tidying table and the third light source is turned on; The PLC controller is used to receive and analyze the first end image of the first battery string and / or the second end image of the first battery string to obtain the position information of the first battery string, and send the position information of the first battery string to the first tidying station, and the first tidying station tidying the first battery string based on the position information of the first battery string; The PLC controller is also used to receive and analyze the first end image of the second battery string and / or the second end image of the second battery string to obtain position information of the second battery string, and send the position information of the second battery string to the second regularizer, and the second regularizer regularizes the second battery string based on the position information of the second battery string.

7. The battery string tidying device according to claim 5, characterized in that: The first light source and the third light source are configured to be independently translatable along the first horizontal direction to implement position adjustment.

8. The battery string tidying device according to claim 5, characterized in that: The light source cleaning mechanism comprises a first light source cleaning mechanism, a second light source cleaning mechanism and a third light source cleaning mechanism, wherein: The first light source cleaning mechanism is disposed on the side of the first light source, and the first light source cleaning mechanism is used to clean the first light source; The second light source cleaning mechanism is arranged at the side of the second light source, and the second light source cleaning mechanism is used to clean the second light source; The third light source cleaning mechanism is arranged on the side of the third light source, and the second light source cleaning mechanism is used for cleaning the third light source.

9. A layout stitch welding machine, characterized in that: The layout and stack welding machine is used to layout and weld busbars of battery strings according to the battery string array in the photovoltaic module. The layout and stack welding machine comprises the battery string regularization device, regularization table driving mechanism, layout feeding device, stack welding picking device and stack welding device according to any one of claims 1 to 8, wherein: The regularization table of the battery string regularization device is installed at the driving end of the regularization table driving mechanism, and the regularization table driving mechanism is used to drive the regularization table to move between the material receiving station and the string picking station, and the light source, the camera and the light source cleaning mechanism are all arranged at the material receiving station; The layout feeding device is arranged in front of the battery string tidying device, and the layout feeding device is used to place the battery string on the tidying table located at the material receiving station according to the layout positive and negative requirements; The arranging platform is used to arrange the battery strings placed by the typesetting and feeding device; The stack welding picking device includes a picking string assembly arranged one by one corresponding to each battery string in the battery string array; the regularization table driving mechanism is used to transport the regularized battery string to the picking string station according to the layout position requirements, and the stack welding picking device moves to drive the picking string assembly corresponding to the battery string at the picking string station to move to the picking string station to pick up the battery string; The stitch welding pick-up device moves to drive the pick-up string assembly with the battery string picked up to the welding station, and the stitch welding device welds the bus bar to the long welding strip at the end of the battery string located at the welding station; The stack welding picking device is also used to move and lay the battery strings picked up by each picking string assembly on the glass plate after the busbar welding of the battery strings picked up by each picking string assembly is completed.

10. The typesetting stitch welding machine according to claim 9, characterized in that: The battery string regularization device is the battery string regularization device according to claim 2, the typesetting and stacking welding machine also includes an NG material box, and the PLC controller is used to control the typesetting and loading device to pick up the battery string on the regularization table at the material receiving station and place the battery string into the NG material box when the extended welding strip at the end of the battery string has at least one of bending, missing and length abnormality.

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